Super Puzzle Platformer Deluxe

Verdant "Glasses Kitty" Brave 2013 年 12 月 15 日 @ 下午 6 時 17 分
Can't switch to windowed mode. How fix?
So I just bought this game a few days ago and switched to fullscreen out of curiosity. Now the game will not allow me to switch back to windowed.

Kind of annoying. How do I fix?